mirror/libbpf
1
0
Fork 0
mirror of https://github.com/netdata/libbpf.git synced 2026-03-21 08:49:06 +08:00
Code Issues Packages Projects Releases Wiki Activity

bpf: pass btf object id in bpf_map_info.

Browse Source 
Include btf object id (btf_obj_id) in bpf_map_info so that tools (ex:
bpftools struct_ops dump) know the correct btf from the kernel to look up
type information of struct_ops types.

Since struct_ops types can be defined and registered in a module. The
type information of a struct_ops type are defined in the btf of the
module defining it.  The userspace tools need to know which btf is for
the module defining a struct_ops type.

Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
Link: https://lore.kernel.org/r/20240119225005.668602-7-thinker.li@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
Kui-Feng Lee
2024-01-19 14:49:57 -08:00
committed by Andrii Nakryiko
parent fe508381b4
commit d70e2071e2
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/uapi/linux/bpf.h
View File

@@ -6487,7 +6487,7 @@ struct bpf_map_info {
__u32 btf_id;
__u32 btf_key_type_id;
__u32 btf_value_type_id;
__u32 :32; /* alignment pad */
__u32 btf_vmlinux_id;
__u64 map_extra;
} __attribute__((aligned(8)));